Kinda depends how different a game can be while still being considered “similar”. Vae Victis has some similar elements, with a male lead who doesn’t take anybody’s shit and goes around taking women for his harem, with some interesting worldbuilding; but, while it does have desert areas, it doesn’t take place exclusively in such a location, and the setting is fantastical as opposed to postapocalyptic.good game, played already
To be honest, I’m also on the lookout for recommendations like these, if anyone has any. My criteria extend to what I said above: man in charge, gets himself a harem. (Good writing and worldbuilding are always a plus.)